Dr. John Maa , MD
Surgery • Greenbrae, CA
Professional Overview & Biography Verified Profile Summary
Dr. John Maa, MD is a certified Surgery practicing in Greenbrae, CA. With approximately 32 years of clinical experience since graduating from Harvard Medical School in 1994, Dr. Maa delivers high-quality medical care to the local community at 250 BON AIR RD.
Dr. Maa is affiliated with Chinese Hospital Association and accepts Medicare assignment.
Frequently performed procedures and clinical services include follow-up hospital inpatient care per day, initial hospital inpatient care per day. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.
Practice Location & Contact Primary Location
250 Bon Air Rd
Greenbrae, CA 949041702
Medicare Profile & Education
Harvard Medical School
1994
✓ Accepts Assignment
In-Person Only
Specialty Benchmarks & Practice Insights
Comparative analytics for Surgery in Greenbrae, CA
Practicing in Greenbrae, CA (3346 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Clinical Seniority & Experience Comparison
Performed Procedures & Service Volume
Top Medicare Part B procedures performed by this practitioner
| HCPCS Code & Description | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99231
Follow-up hospital inpatient care per day, typically 15 minutes
|
72 | 31 | $86.00 | $42.72 |
|
99221
Initial hospital inpatient care per day, typically 30 minutes
|
21 | 19 | $222.00 | $109.75 |
Medical Specialties & State Licenses
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Hospital & Practice Group Affiliations
Chinese Hospital Association
845 Jackson St, San Francisco, CA 941334851
Phone: 4156772370
Secondary Practice Locations
400 Parnassus Ave
San Francisco, CA 941432202
Phone: 4153532161
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Surgery - Trauma Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Colon & Rectal Surgery
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
NPI status registered as active in NPPES database
Registered at 250 BON AIR RD, GREENBRAE, CA 949041702 (Tel: 4159242515)
Registered at 5 BON AIR ROAD #101, LARKSPUR, CA 94909 (Tel: 4159242515)
Recorded as JOHN MAA, MD
Surgery (License #A55909 in CA)
NPI status registered as active in NPPES database
Registered at 400 PARNASSUS AVE, SAN FRANCISCO, CA 941432202 (Tel: 4153532161)
Registered at 1635 DIVISADERO STREET, SUITE 625, BOX 1821, SAN FRANCISCO, CA 941430001 (Tel: 4154764029)
Recorded as JOHN MAA, MD
Surgery (License #A55909 in CA)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
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NPI Administrative Meta
Mailing Address
5 Bon Air Road #101
Larkspur, CA 94909
Phone: 4159242515
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.